2 x 10 =
4 x 5
6 x 5
5 x 5
4 x 4
8 x 8 =
12 x 5
60
64
66
10 x 10 =
11 x 9
100
1000
10
4 x 12 =
10 x 5
7 x 7
7 x 8
8 x 6
